Finding the Fourth Proportional to 105,406.52, 157,856.42 and 60,291.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,406.52 : 157,856.42 = 60,291.16 : x
2. Step 2: Convert to fraction form
   105,406.52/157,856.42 = 60,291.16/x
3. Step 3: Cross multiply
   105,406.52x = 157,856.42 × 60,291.16
4. Step 4: Simplify right side
   105,406.52x = 9,517,346,431.33
5. Step 5: Solve for x
   x = 9,517,346,431.33/105,406.52
6. Step 6: Final answer
   x = 90,291.82